this event is an exception,
because of the 1.3* damage after armor reduction
performance from team 1 is more important than team 2.
i manage to get S rank without going to night battle ....1 or 2 time.
with 4 member from team 2 using ASW weapons
team 2 is just doing cleaning up job.

also last dance night battle
bismark double attack kitakami double attack that kill the boss.

i 退避 but no problem enters boss node..

team1
4CV+1BB+1CL  maybe LOS (553+53) is too high so no problem  when i 退避 2 member

yura fumo+ 8cm + 2 fighter plane no mod
iowa carrying yura recon plan

team 2
bismark night recon max
roma shiun

double FBB on red bar and all +1 sonar is to reduce retreat count on SS node

like i say last dance is pure luck
all cond 85

high speed hayatsui oil tank*2
bismark 46CM*2+night recon     megami
kitakami double attack megami  15.2kai + 20.3 type 3
poi 50 luck quint torp*2 + flash + megami
kasumi 48 luck quint torp*3 +megami  
abukuma 59 luck  T61*2  megami

i only use 1 megami
you can retry until remaining 70K

just a piece of advice

to kill the last dance
CV> BB >team 2

CV each to have + accuracy plane and 試製景雲(艦偵型)
to boost the 接触率   , i reach 97%
2-3 blue plane to increase the crit damage,
1 blue plane 1.7
2 blue plane 1.9
3 blue plane 2.1
200 fire power CV can deal 300 damage to boss if crit damage。
all blue plane need to >>
F5 if fail to kill boss during night mode.

need about 4 time of critical hit to boss to finish it
team 2 torp cutin about 16% critical hit chance
CV crit hit about 15% 
BB cutin crit hit about 16%

you can try SS on team 1 to boost your CV survivability。
put megami in CV rather than team 2
torp plane also has extra damage to BB hime especially during contact phase

Finish E7-hard last dance in 5 tries...big thanks to roimekoi for the blood drain and LD strategy. 2 normal repair fairy were used in blood drain, while zero repair megami used( i thought ayanami will consume it but not in the end). 2 set of irako/mamiya used in last dance. All LBAS sent to boss node and achieved AS+ at boss node.

I just found that loli ss like to hit my DD no matter at which position of 2nd fleet, or they just love to aim 2nd fleet flagship. LBAS help in clearing small ship but not big ship, while my boss support expedition help alot too. My CV output high damage to boss fleet and cause them left only 2 taiha when enter night battle, bsm finish the boss with double hit...

Equipment list show at video timeline 16:25

For e7, maybe can try this if got resource...

https://twitter.com/_naunk_/status/901434183091761152

Too many green plane
Main gun use 46 cm
420 as+ is enough
E7 armor reduction includes accuracy increments
Now reach 97% even when equip with most heaviest gun
3/4slot blue plane CV put in first slot in team 1

Don't waste resource to >> lbas... There is no bonus to damage or accuracy increase. Only can increase air Superiority

Graf please drop already, drop rate of 2.x% no longer accurate for me.

advice needed currently at E6H doing TP gauge... is it advisable to actually go for E7H? my resource are fine but with only few days left i am not sure i have the time to complete it

jeesus what

dont underestimate E7, its not easy until you did the debuff

i was walloping the boss every time i sortie, but the debuff nodes.. phewww

every node can be considered as cockblock nodes in harder diffs

hes in E7H last dance now im preety sure he know all the gimmicks

now at E7M opening hidden route
no fucking way i am gonna risk not getting ark royal by going E7H

html5 migration & friend system (lol) next spring
https://twitter.com/docuwo/status/908947163937349632
suzutsuki next fall, & they'll implement british destroyer
https://twitter.com/bugyou0201/status/908942612203167744